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Please Answer TRUE OR FALSE 1. The degree of viscosity is related to the size and...

Please Answer TRUE OR FALSE
1. The degree of viscosity is related to the size and strength of intermolecular force of a liquid.
2.Diamond and ice are covalent network solids
3. At the triple point in a phase diagram, all three phases, solid, liquid and solution coexist in equilibrium.
     

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Answer #1

1. TRUE, Particles of the same substance have an attractive Forces on one another.Some substances have a strong attraction while some substances have a weaker attraction.Stronger the attraction of particles, higher will be the viscosity.

Small particles can move more easily past each other and can therefore flow faster, meaning they have a lower viscosity and larger particles have higher viscosity.

2.FALSE, Diamond is a covalent network solid but not ice.Ice is a molecular solid.Molecular solids have lower melting and boiling point than covalent network solid, which are held together by strong bonds.

3.TRUE, Triple point of a substance is the temperature and pressure at which it can exist in the solid, liquid and gaseous state simultaneously.

Ex:- triple point of water (0.01°C,4.58mm)

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